EP 1352915 B1 20050323 - Continuous emulsion polymerisation process for preparing polymers stabilised by protective colloids
Title (en)
Continuous emulsion polymerisation process for preparing polymers stabilised by protective colloids
Title (de)
Verfahren zur Herstellung von Schutzkolloid-stabilisierten Polymerisaten mittels kontinuierlicher Emulsionspolymerisation
Title (fr)
Procédé continu de polymérisation en émulsion pour la préparation de polymères stabilisés par des colloides protecteurs
Publication
Application
Priority
- DE 10035587 A 20000721
- EP 01114702 A 20010621
Abstract (en)
[origin: EP1174445A1] A process for the production of polyvinyl alcohol stabilized polymers based on vinyl ester, ethylene and optionally other comonomers is carried out in at least two pressurized reactors in series followed by reaction in a non-pressurized reactor whereby the polymerization is initiated by a redox system such that the reducing component is at least partially added to the first pressurized reactor. A process for the production of polyvinyl alcohol stabilized polymers based on vinyl ester, ethylene and optionally other comonomers in the form of an aqueous polymer dispersion or water re-dispersible polymer powder by means of radically initiated continuous emulsion polymerization with optional drying of the resulting dispersion where the emulsion polymerization is carried out in (A) at least two pressurized reactors in series at 40-100 degrees C and 5-100 bar to a residual monomer content of less than 3 wt.% followed by reaction in a non-pressurized reactor at 20-60 degrees C and less than 1.0 bar whereby (B) the polymerization is initiated by a redox system of oxidizing and reducing components, whereby the reducing component is at least partially added to the first pressurized reactor.
IPC 1-7
IPC 8 full level
C08F 2/00 (2006.01); C08F 2/01 (2006.01); C08F 2/16 (2006.01); C08F 2/22 (2006.01); C08F 216/06 (2006.01); C08F 218/02 (2006.01); C08F 218/04 (2006.01); C08F 263/04 (2006.01); C08J 3/12 (2006.01); C08L 23/08 (2006.01); C08L 51/00 (2006.01); C09D 123/04 (2006.01); C09D 129/04 (2006.01); C09D 131/00 (2006.01); C09D 151/00 (2006.01); C09J 123/04 (2006.01); C09J 129/04 (2006.01); C09J 131/00 (2006.01); C09J 151/00 (2006.01); C08F 218/08 (2006.01); C08L 29/04 (2006.01)
CPC (source: EP KR US)
C08F 216/06 (2013.01 - KR); C08F 218/04 (2013.01 - EP US); C08F 263/04 (2013.01 - EP US); C08L 23/0869 (2013.01 - EP US); C08L 51/003 (2013.01 - EP US); C09D 151/003 (2013.01 - EP US); C09J 151/003 (2013.01 - EP US); C08F 218/08 (2013.01 - EP US); C08L 29/04 (2013.01 - EP US); C08L 2666/02 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE LI NL
DOCDB simple family (publication)
EP 1174445 A1 20020123; EP 1174445 B1 20031022; DE 10035587 A1 20020207; DE 50100819 D1 20031127; DE 50105737 D1 20050428; EP 1352915 A1 20031015; EP 1352915 B1 20050323; JP 2002105106 A 20020410; JP 3574796 B2 20041006; KR 100440703 B1 20040715; KR 20020009442 A 20020201; TW 565574 B 20031211; US 2002035192 A1 20020321; US 6664322 B2 20031216
DOCDB simple family (application)
EP 01114702 A 20010621; DE 10035587 A 20000721; DE 50100819 T 20010621; DE 50105737 T 20010621; EP 03009893 A 20010621; JP 2001218669 A 20010718; KR 20010043779 A 20010720; TW 90117844 A 20010720; US 89156101 A 20010626